Propyl gallate: A novel collector for flotation separation of fluorite from calcite
Propyl gallate: A novel collector for flotation separation of fluorite from calcite
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DOI：
10.1016/j.ces.2018.09.017
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发表时间：
2019-01-16
影响因子：
4.7
通讯作者：
Lyu, Fei
中科院分区：
文献类型：
--
作者：
Gao, Jiande;Sun, Wei;Lyu, Fei
在实际的浮选系统中，由于这两种矿物具有相似的表面性质，因此萤石与方解石的浮选分离是一个挑战。本文的目的是开发一种用于分离的高选择性浮选捕收剂。没食子酸丙酯 (PG) 作为捕收剂用于从方解石中选择性浮选分离萤石。采用PG作为捕收剂，可以在不使用任何抑制剂的情况下实现萤石与方解石的分离。通过zeta电位测量、吸附、FT-IR和XPS分析研究了萤石和方解石的浮选机理。结果表明，酚羟基是PG能选择性吸附在萤石上的官能团，且PG在萤石表面的吸附量大于在方解石表面的吸附量。 (C) 2018 Elsevier Ltd. 保留所有权利。
In real flotation systems, the flotation separation of fluorite from calcite is a challenge due to the similar surface properties of these two minerals. The purpose of this paper is to develop a highly selective flotation collector for the separation. Propyl gallate (PG) was introduced as a collector for selective flotation separation of fluorite from calcite. The separation of fluorite from calcite without using any depressant can be achieved by using PG as the collector. The flotation mechanism of fluorite and calcite was studied by zeta potential measurements, adsorption, FT-IR and XPS analysis. The results indicated that phenolic hydroxyls were the functional groups of PG which can selectively adsorb on fluorite, and the adsorption amount of PG on the surface of fluorite was larger than on calcite. (C) 2018 Elsevier Ltd. All rights reserved.